An optical purity of 99% (e.e) was obtained and the yield of (5)-CHBE reached 96.6% when initial concentration of COBE was 6.05g/L.是什么意思_An optical purity of 99% (e.e) was obtained and the yield of (5)-CHBE reached 96.6% when initial concentration of COBE was 6.05g/L.在线翻译_英语_读音_用法_例句